GIMP is a free image editing tool that supports plug-ins. We’ll install it and load the Stable Boy plugin into it. That’s one half of the puzzle. We also need to get the AI backend up and running.

As good an image editor GIMP is—out of the box, it can fall short of Photoshop at times. That said, you can use plugins to extend GIMP's functionality, and these make it even more powerful than ...